*{
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}
ul{
  list-style: none;
}
a{
	text-decoration:none;
  color: #999;
}
img{
	border:none;
	display:block;
}
body{
	background-color: #e9e9e9;
}
/*主页*/
.nav-wrap ul{
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  height: 1rem;
  background: #f9f9f9;
  align-items: center;
  justify-content: space-around;
  font-size: .25rem;
}
.nav-wrap ul li img{
  height: .5rem;
}
.nav-wrap div{
  display: flex;
  flex-direction: column;
  align-items: center;
}
